Details
Bug
Closed
Major
Description
...
@XStreamImplicit(itemFieldName="line")
ArrayList<ArrayList<Point>> lines;
...
Annotations.configureAliases(xstream, PolyLine.class); ...
throws
java.lang.ClassCastException:
sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl
at com.thoughtworks.xstream.annotations.Annotations.getFieldParameterizedType(Annotations.java:226)
at com.thoughtworks.xstream.annotations.Annotations.configureClass(Annotations.java:161)
at com.thoughtworks.xstream.annotations.Annotations.configureAliases(Annotations.java:49)
when configureAliases() is executed.
The old code I used for 1.2.1 still works and is a viable (although ugly) workaround:
xstream.addImplicitCollection(PolyLine.class, "lines", "line", ArrayList.class); // Workaround
Activity
Set resolution to fixed, still waiting for Klaus' comment and closing of the issue ...
Jörg Schaible
added a comment - Set resolution to fixed, still waiting for Klaus' comment and closing of the issue ... This fix probably also fixes my issue, but I wanted to let you know anyway, so you can test it.
The problem Klaus is referring to also comes up when you use the @XStreamContainedType annotation on a type where the parameter type is also a parameterized type:
@XStreamContainedType()
public List<List<CarModel>> carModels = new ArrayList<List<CarModel>>();
Here's the exception:
java.lang.ClassCastException: sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl cannot be cast to java.lang.Class
at com.thoughtworks.xstream.annotations.Annotations.configureParameterizedTypes(Annotations.java:249)
at com.thoughtworks.xstream.annotations.Annotations.configureClass(Annotations.java:132)
at com.thoughtworks.xstream.annotations.Annotations.configureAliases(Annotations.java:49)
Also, I was wondering if the fix actually looked at contained types in contained types, or if it is just a superficial fix.
For instance, in my example, if I had an alias defined for CarModel, would the alias be registered or not? I think it should be.
I couldn't get a 'lastest snapshot' from your repository, the links on this page don't work:
http://xstream.codehaus.org/download.html
How do I get a recent snapshot?
Thanks,
Paul
Paul van der Maas
added a comment - This fix probably also fixes my issue, but I wanted to let you know anyway, so you can test it.
The problem Klaus is referring to also comes up when you use the @XStreamContainedType annotation on a type where the parameter type is also a parameterized type:
@XStreamContainedType()
public List<List<CarModel>> carModels = new ArrayList<List<CarModel>>();
Here's the exception:
java.lang.ClassCastException: sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl cannot be cast to java.lang.Class
at com.thoughtworks.xstream.annotations.Annotations.configureParameterizedTypes(Annotations.java:249)
at com.thoughtworks.xstream.annotations.Annotations.configureClass(Annotations.java:132)
at com.thoughtworks.xstream.annotations.Annotations.configureAliases(Annotations.java:49)
Also, I was wondering if the fix actually looked at contained types in contained types, or if it is just a superficial fix.
For instance, in my example, if I had an alias defined for CarModel, would the alias be registered or not? I think it should be.
I couldn't get a 'lastest snapshot' from your repository, the links on this page don't work:
http://xstream.codehaus.org/download.html
How do I get a recent snapshot?
Thanks,
Paul Closing issues before next release.
Jörg Schaible
added a comment - Closing issues before next release. 
Commited possible solution which allows ParameterizedTypes to contain other ParameterizedTypes.